The most visual, interactive piano theory companion. Scales, chords, and real progressions — color-coded and mapped right onto the keyboard.
Major, minor, all 7 modes, pentatonic, blues, whole tone, and diminished. Every scale shows its formula, degrees, and lights up across the keyboard.
From basic triads to altered dominants and 13th jazz chords. Every chord is mapped onto the keys with the root, 3rd, 5th and extensions color-coded.
Tap any combination of keys to highlight your own voicing. Build chords by ear, design scales from scratch, or experiment outside the boundaries of standard theory.
Named progressions across Pop, Rock, Blues, Jazz, and more — plus a custom builder that lets you stack any chord from any key. Hit Play and hear real piano audio.
Hear every chord with real sampled piano notes. Tap any chord in the library or let the progression player cycle through at your BPM with subtle arpeggio voicing.
BPM 40–240, six time signatures including 6/8 and 7/8, accent + offbeat clicks, tap-tempo, and a drift-corrected timer that stays steady even at 200+ BPM.
Light up any chord on the keyboard with the root, 3rd, 5th and extensions color-coded so the structure is instantly readable. 35 chord types from basic triads to 13ths.
Every highlighted key is colored by its role in the chord or scale. Roots are gold. Thirds are red. Fifths are green. Extensions are blue. Train your eye to recognize chord shapes the way trained pianists hear them — as relationships, not just notes.
22 progressions across every genre — plus a custom builder that lets you stack any chord from any key. Hit Play and hear real piano audio while the keyboard shows you every chord in sequence.
Launching first on iOS. Android coming soon after.